As Secretary-General, Lie supported the foundations of Israel and Indonesia. His passionate support for Israel included passing secret military and diplomatic information to Israeli officials. He sent 50 members of the United Nations guard force from Lake Success to assist the Mediator in supervising the Truce in the former British Mandate of Palestine in 1948 and the "UNTSO", the first peacekeeping operation was established by the United Nations. He worked for the withdrawal of Soviet forces in Iran and a ceasefire to fighting in Kashmir. He attracted the ire of the Soviet Union when he helped gather support for the defence of South Korea after it was invaded in 1950 and later worked to end the Soviet boycott of UN meetings, though his involvement had little to do with the eventual return of the Soviet Union to the UN. He was opposed to Spain's entry into the United Nations because of his opposition to Francisco Franco's government.