“President Trump’s brash and condescending lecture to NATO leaders disrespected our closest allies and dishonored the common defense pact that has been a guarantor of global security for nearly seven decades. His failure to affirm America’s commitment to NATO’s mutual defense pledge – invoked only once, when NATO allies rushed to our side in Afghanistan after 9/11 – is not only shameful but also dangerous. By showing his disregard for Article Five, President Trump emboldens Russian aggression in Europe.