They've been having "issues" down there for a long time. In 1972, we had a mission staging out of EZE to cover a space launch from Vandenburg AFB. Juan Peron was planning to return from exile and had a stooge running for President to keep the seat warm. We had to stay at the airport, with a guard on the airplane, since intel figured there would be a terrorist incident to commemorate the anniversary of some "revolutionary martyrs". As it turned out, the insurgents struck another location. The mission took us over the area that would become the Falklands war zone a few years later.