...As the Obama administration struggles with another darkening crisis in Pakistan, Mr. Haqqani has become an influential figure in Washington... The crisis has given Mr. Haqqani, 52, access to the highest levels of the Obama administration and Congress, the latest twist in a lifetime spent navigating Pakistan’s treacherous political shoals. He speaks several times a week with Richard C. Holbrooke, the administration’s special representative for Afghanistan and Pakistan, who calls him “one of the most skilled ambassadors I have ever seen.” He figures he has met with 90 members of Congress. And he is a fixture on CNN, the op-ed...