By Andrea Shalal WASHINGTON (Reuters) – British investment minister Dominic Johnson said he discussed the seizure of frozen Russian assets with U.S. Deputy Treasury Secretary Wally Adeyemo on Monday, and stressed that any move to do so must be done in strict accordance with international law. Johnson said these were clearly “unique times,” but it was imperative to ensure that any move was well-coordinated internationally and there were still important legal details to work out. A U.S. Senate committee last week approved legislation that would help set the stage for the United States to confisc…