Sure, just like Poland had written European border guarantees issued in March 1939. Not to mention 1994 Ukraine ones signed by Russia, Britain and the United States.
This is why this shit is not going to fly in Poland, our government will do everything in their power to get as much US troops on the ground as possible, at the cost of being USA gofer in Iraq/Afganistan/Iran/wherever POTUS fancies this week.
Germany has already been shown going back to their old tricks, scheming another Molotov-Ribbentrop behind whole EUs back with Nord Stream, and especially Nord Stream 2. Paradoxically US is the only country with some backbone to oppose this german-Putin deal, with most western EU countries sitting silent.