Article snippet: WASHINGTON — She imperiled his State of the Union address. He denied her a plane to visit troops abroad. The shutdown battle between President Trump and House Speaker Nancy Pelosi is playing out as a surreal game of constitutional brinkmanship, with both flexing their political powers from opposite ends of Pennsylvania Avenue as the negotiations to end the monthlong partial government shutdown remain stalled. In dramatic fashion, Trump issued a letter to Pelosi on Thursday, just before she and other lawmakers were set to depart on the previously undisclosed trip to Afghanistan and Brussels. Trump belittled the trip as a ‘‘public relations event’’ — even though he had just made a similar warzone stop — and said it would be best if Pelosi remained in Washington to negotiate to reopen the government. ‘‘Obviously, if you would like to make your journey by flying commercial, that would certainly be your prerogative,’’ wrote Trump, who had been smarting since Pelosi, the day before, called on him to postpone his Jan. 29 State of the Union address due to the shutdown. Denying military aircraft to a senior lawmaker — let alone the speaker, who is second in line to the White House, traveling to a combat region — is very rare. Lawmakers were caught off guard. A bus to ferry the legislators to their departure idled outside the Capitol on Thursday afternoon. The political tit-for-tat between Trump and Pelosi laid bare how the government-wide crisis has devolved into an inten... Link to the full article to read more