Continued from page 1

Sen. John McCain of Arizona, the top Republican on the Senate Armed Services Committee, lashed out Sunday at the ISI, saying it is time to release aid based on how Pakistan performs against U.S. enemies. The ISI is still supporting the Haqqani Network, which is killing Americans.

“That is unacceptable,” Mr. McCain told CNN’s “State of the Union.”

“We have to address it in a realistic fashion, and aid has to be gauged on the degree of cooperation that they are showing us and helping us prevent the needless deaths of young Americans. That’s our first obligation,” he said.

In a related development, Afghan President Hamid Karzai has accused Pakistan of undermining attempts to reach a peace deal with the Taliban.

“Up until now, they have sadly refused to back efforts for negotiations with the Taliban,” Mr. Karzai told the German newsmagazine Der Spiegel in comments reported Sunday.

As part of its reaction to the NATO airstrikes, Pakistan announced plans to boycott an international conference on Afghanistan that opens in Germany on Monday. The meeting seeks to prepare Afghanistan for a withdrawal of NATO troops in 2014.