The British in the 1930s built the Mosul–Haifa oil pipeline from Western Iraq through the British-ruled Emirate of Transjordan then to Haifa, in Mandatory Palestine. During the Anglo-Iraqi War, the Irgun - an Israeli independence movement - participated in the British invasion of Iraq. Immediately after the declaration of the establishment of the State of Israel in May 1948, Arab armies, including those of Iraq, invaded the former Mandate Palestine territory, and the oil pipeline to Haifa was shut down, and the pipeline diverted through a branch line to Tripoli in Syria. Following the war, Iraq was the only Arab country not to sign a ceasefire agreement with Israel, and the two countries have technically been in a continuous state of war since 1948.