By Mike Stone WASHINGTON (Reuters) -White House officials met on Monday with about a dozen leaders from venture capital firms and the technology and defense industries in an effort to reinforce the Biden administration’s interest in supporting Ukraine’s access to cutting-edge U.S. equipment, senior administration officials said. “The conversation focused on a number of systems, including, unmanned aerial systems, how to counter incoming unmanned aerial systems, and then also addressing the demining challenge,” one of the officials told a group of reporters during a telephone call following the…