Thatcher's first foreign-policy crisis came with the 1979 Soviet invasion of Afghanistan. She condemned the invasion, said it showed the bankruptcy of a détente policy, and helped convince some British athletes to boycott the 1980 Moscow Olympics. She gave weak support to US president Jimmy Carter who tried to punish the USSR with economic sanctions. Britain's economic situation was precarious, and most of NATO was reluctant to cut trade ties. Thatcher nevertheless gave the go-ahead for Whitehall to approve MI6 (along with the SAS) to undertake "disruptive action" in Afghanistan. As well working with the CIA in Operation Cyclone, they also supplied weapons, training and intelligence to the "mujaheddin".