"President Trump on Wednesday turned on his own vice president, bashing Mike Pence for declining to illegally overturn the result of the election just as pro-Trump protesters stormed the Capitol building."...
Diplomatic suggests a smoothness and skill in handling others, usually in such a way as to attain one's own ends and yet avoid any unpleasantness or opposition - https://www.dictionary.com/browse/diplomatic
I haven't heard Pence say that the 2020 election was stolen from Trump. Obviously, he doesn't really believe that, or he would have said so by now if he did.