Question: When did the U.S. secure Britain's cooperation in limiting Allied activities in the Mediterranean?
About the article "World War II", section "Axis advance stalls (1942–43)".

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Originally, Allied Forces Southern Europe was one of two major NATO commands in the Mediterranean area, the other being Allied Forces Mediterranean based on the island of Malta, responsible for naval activities in the region.
While Admiral Robert B. Carney of the U.S. Navy was appointed as Commander-in-Chief Allied Forces Southern Europe (CinCAFSOUTH) on 19 June 1951, AFMED was not activated until 1953.
The delay was due to negotiations and compromises between the Americans and the British, who wished to retain one of their commanders over Britain's traditional sea lines of communication stretching through the Mediterranean to the Suez Canal and beyond.
From 1951 to 2003, the Commander-in-Chief of Allied Forces Southern Europe was always a United States Navy admiral, based at Naples, who also held the national appointment of Commander-in-Chief United States Naval Forces Europe.
When Greece and Turkey joined the alliance in early 1952, a new allied land sub-command, Allied Land Forces South-Eastern Europe (LANDSOUTHEAST), was created with its headquarters based in Izmir, Turkey, under the command of a U.S. Army General.
Later in 1953, the various national naval forces within Allied Forces Mediterranean were organised into six separate areas, each commanded by an Admiral (including one French (MEDOC), one Greek, one Turkish, one Italian and two British).
In time of war, CINCAFMED would be responsible for securing the Sea lines of communications throughout the Mediterranean Sea.
Some of AFSOUTH's first exercises took place in 1952.
Operation Ancient Wall was a series of military maneuvers involving ground small unit tactical training, land-based tactical air support, and carrier-based air support under the overall command of Admiral Carney.
Exercise Grand Slam was a combined naval exercise held in the Mediterranean Sea between 25 February to 16 March 1952.
The exercise included allied warships escorting three convoys of supply ships which were subjected to repeated simulated air and submarine attacks, as well as anti-submarine warfare (ASW) operations and naval gunfire shore bombardment.
Operation Longstep was a ten-day naval exercise held in the Mediterranean Sea held during November 1952.
It involved over 170 warships and 700 aircraft, and it featured a large-scale amphibious assault along the western coast of Turkey.1953 AFSOUTH exercises included:  "Italic Weld" — a combined air-naval-ground exercise in northern Italy involving the United States, Italy, Turkey, and Greece  "Weldfast" — a combined amphibious landing exercise in the Mediterranean Sea involving British, Greek, Italian, Turkish, and U.S. naval forces In 1957, Operation Deep Water simulated the defence of the Dardanelles from a Soviet attack.
The exercise included an 8,000 strong amphibious landing.
The drawdown of the British Mediterranean Fleet, the military difficulties of the politically-decided command structure, and the withdrawal of the French from the military command structure forced a rearrangement of the command arrangements in the southern region.
Allied Forces Mediterranean was disbanded on 5 June 1967, and all forces in the south and the Mediterranean assigned to AFSOUTH.AFSOUTH continued to conduct exercises in the 1960s and 1970s, among which was exercise 'Dawn Patrol,' a five-nation naval and air exercise conducted throughout the Mediterranean in 1974.
The U.S. contribution to the exercise was based on the USS "America" carrier battle group.
From 1967 the overall shape of AFSOUTH did not significantly change until the command was renamed in 2004.
There were five principal subordinate commands (PSCs).
The number rose to six when Greece was taking part in the military structure; Greece withdrew from the NATO military structure after the Turkish invasion of Cyprus in 1974, and after some behind the scenes negotiating by NATO officials, returned in October 1980.
Two land commands, Allied Land Forces Southern Europe and Allied Land Forces Southeastern Europe, were tasked to defend Italy and Turkey respectively.
Each was directly responsible to Commander-in-Chief, AFSOUTH, and supported by a tactical air force, 5th Allied Tactical Air Force in Italy and 6th Allied Tactical Air Force in Turkey.
The two allied tactical air forces were under an overall air command, Allied Air Forces Southern Europe, headquartered at Naples in Italy under a United States Air Force officer, ComAirSouth, responsible himself to CinCAFSOUTH.
ComAirSouth held the U.S. national appointment of Commander Sixteenth Air Force for a long period.
Due to political considerations, command of the naval forces in the region was split.
Allied Naval Forces Southern Europe, at Naples, operated most of the NATO allies' naval forces in the Mediterranean under an Italian admiral.
But due to the U.S. desire to retain control of their nuclear-armed naval forces, the United States Sixth Fleet reported directly to CinCAFSOUTH, supported by a separate headquarters named Naval Striking and Support Forces Southern Europe (STRIKFORSOUTH).
The sixth command was an Allied command responsible for the land defence of Greece, named Allied Land Forces South-Central Europe or LANDSOUTHCENT.
However it is not certain that it actually was ever operational, with the 1998/99 NATO Handbook listing it as 'yet to be activated.'
Below these PSCs were smaller headquarters such as Maritime Air Forces, Mediterranean, at Sigonella, Sicily, responsible for coordination of the aerial anti-submarine effort, Submarine Forces, South, and the Naval On-Call Force Mediterranean, a multinational escort squadron activated at intervals.
From 1992 AFSOUTH was heavily involved in NATO operations in the Balkans, initially with NATO seaborne enforcement of a UN arms embargo, Operation 'Maritime Monitor,' which began in July 1992.
This operation was fused with a similar Western European Union effort and thus became Operation Sharp Guard from July 1993.
AFSOUTH also directed activities such as Operation Deny Flight from AIRSOUTH headquarters in Italy.
Commander-in-Chief AFSOUTH directed the NATO peacekeeping missions in Bosnia & Hercegovina, IFOR and SFOR, from December 1995.
While technically in charge of KFOR from mid-1999, General Sir Mike Jackson's autobiography, "Soldier," indicates General Wesley Clark at SHAPE in Belgium directly supervised many of KFOR's activities, without going through AFSOUTH, at least during the Allied Rapid Reaction Corps' tour as HQ KFOR in 1999.
The reorganisation of AFSOUTH as JFC Naples in 2004 was a part of NATO’s transformation, initiated by the Prague summit of 2002, aimed at adapting the allied military structure to the operational challenges of coalition warfare, to face the emerging threats in the new millennium.
The new NATO Command Structure is leaner, more flexible, and focused on conducting a much wider range of missions. 
One of Britain's allies was Ferdinand I of the Two Sicilies whose Kingdom was key to British interests in the Mediterranean.
In 1805 British forces under the command of General James Craig were part of an Anglo-Russian force intended to secure the Kingdom of Naples.
However after a brief occupation the allied position became untenable with the news of the disastrous Austrian defeat at the Battle of Ulm. 
Operation Flagpole was part of the run-up to Operation Torch, the planned Allied invasion of North Africa during World War II.
It involved arranging for and carrying out a top-secret high-level meeting between U.S. General Mark W. Clark, representing the Allies, and Général Charles E. Mast, the leader of a group of pro-Allied Vichy France officers in French North Africa, to secure their cooperation with the invasion. 
Wilson succeeded Dwight D. "Ike" Eisenhower at Allied Forces Headquarters (AFHQ) as the Supreme Allied Commander in the Mediterranean on 8 January 1944.
As such he exercised strategic control over the campaign in Italy.
He strongly advocated the invasion of Germany via the Danube plain, but this did not take place when the armies in Italy were weakened to support other theatres of war. 
On December 10, 1943, MAC was disbanded and the Mediterranean Allied Air Forces (MAAF) were formed with Air Chief Marshal Sir Arthur Tedder as Air Commander-in-Chief.
In mid-January 1944, Lieutenant General Ira Eaker took over MAAF when Eisenhower chose Tedder to oversee air operations and planning for the Normandy Landings.
Based on the success of the "tri-force" model in NAAF, it was retained in MAAF as separate Mediterranean Allied Strategic, Tactical, and Coastal Air Forces.
Effective coordination of air and ground forces and cooperation with naval forces were key features of the "tri-force" model empowered by the command structures of NAAF, MAAF, and even today's air forces.