The United States and Pakistan will start their strategic dialogue on Wednesday in Washington, which is aimed to serve as 'a venue' to ease tensions in the bilateral relations, Frank Ruggiero, U.S. deputy special representative to Afghanistan and Pakistan, said on Tuesday. The relations between the two countries are sometimes marred by U.S. complaints that Pakistan is not doing enough to crack down the Taliban fighters within its territory. Meanwhile, Pakistan has also expressed its frustrations on the slow pace of economic aid and U.S. lack of sympathy for its confrontation with India. The country is particularly angered by the recent accidental killings of three Pakistani soldiers by a NATO helicopter gunship, which led to the shut-down of a NATO supply line into Afghanistan. Ruggiero told reporters that the dialogue, the third one of its kind this year, underscores the Obama administration's willingness to strengthen bilateral relations and build mutual trust. Ruggiero said the dialogue, led by U.S. State Secretary Hillary Clinton and Pakistani Foreign Minister Shah Mahmood Qureshi, will touch on the 'multi-year security assistance for Pakistan.' Reports said the assistance package will involve the sale of U.S. military equipment to Pakistan, which has long been in Pakistan's demand list. Besides the security assistance package under discussion, the U. S. Congress last year has already approved a five-year, 7.5- billion-dollar nonmilitary aid package. Of course, in return, the United States will continue to pressure Pakistan to step up its efforts to fight Taliban militants in its border, according to Ruggiero. White House spokesman Robert Gibbs also told reporters on Tuesday that during the dialogue the United States will 'detail for the Pakistanis what more must be done.' 