Defying a warning from Washington, Pakistan’s prime minister promised to go ahead with a plan to import natural gas from Iran, even if the U.S. levies additional sanctions against the Mideast country. Prime Minister Yousuf Raza Gilani’s comments Tuesday came two days after the U.S. special envoy to Pakistan, Richard Holbrooke, cautioned Pakistan not to “overcommit” itself to the deal because it could run afoul of new sanctions against Iran being finalized by Congress. The deal has been a constant source of tension between the two countries, with Pakistan arguing it is vital to its ability to cope with an energy crisis, and the U.S. stressing it would undercut international pressure on Iran over its nuclear program. >>>