WASHINGTON, Jan 6 (INP) The United States is examining ways to mitigate any Pakistani retaliation as it piles pressure on Islamabad to crack down on militants, a senior US official said on Friday, cautioning that US action could extend beyond a new freeze in aid. Mattis, speaking to reporters at the Pentagon, said he was not concerned about America’s ability to use Pakistan as a gateway to resupply US forces in Afghanistan................. INP/AH/LK