By Patricia Zengerle and Jonathan Landay WASHINGTON (Reuters) – Russian forces are operating with “reckless disregard” for civilians as they face stronger-than-expected resistance in Ukraine, and American intelligence agencies are tracking their actions to hold them to account, U.S. Director of National Intelligence Avril Haines said on Thursday. “The Russian military has begun to loosen its rules of engagement to achieve their military objectives,” Haines told the Senate Intelligence Committee’s annual hearing on worldwide threats to U.S. security. Haines, a Cabinet-level official who heads t…