KABUL, Afghanistan (AP) — A helicopter crashed in southern Afghanistan Saturday, killing one member of the U.S.-led coalition and injuring another in what was the second deadly air crash in the country in a week, NATO officials said.

The crashes come as U.S. officials are grappling with tough talk from Afghan President Hamid Karzai whose recent anti-American rhetoric has complicated relations at a time when international troops are withdrawing from the war.