WASHINGTON - A planned meeting between US and Pakistani military chiefs was postponed this week due to a wave of violent anti-American protests, the top-ranking US officer, General Martin Dempsey, said Thursday.Dempsey revealed at a news conference that he had scheduled a discreet trip to Pakistan to meet chief of the army staff, General Ashfaq Kayani, but the two agreed to call off the talks amid unrest on the streets of Pakistani cities.“I was originally planned to go to Pakistan to meet with General Kayani, and because of some of the issues related to that film, he and I discussed postponing that visit - mostly so that I would give him the time to deal with the issues he was dealing with internally,” said Dempsey, chairman of the US Joint Chiefs of Staff.Instead, Dempsey said he extended an unannounced visit to Afghanistan, visiting the southern provinces of Kandahar and Helmand. The general did not take reporters with him and his office made no public announcement about his Afghan trip.Dempsey has adopted a lower profile than his media-friendly predecessor Admiral Mullen, who at times publicly diverged from White House’s stance on some issues. Unlike the previous chairman, Dempsey has taken a number of overseas trips without any press documenting his visits. He denied that he had kept the trip under wraps because of any doubts about Afghan war effort.