The problem which the USA faces is that it is the sole superpower in the world & is looked up to by many countries that faces some or the other problem, it is a great friend for some countries but a great foe for many others. Take the example of Pakistan itself, till the 1990s when US was giving every help to Pakistan such as F-16s, Afghanistan, 1971 war, ignoring it's nuclear program, etc., US was a great friend/ally of Pakistan, but after 9/11 when it took great diplomatic turnaround by befriending India, giving it a nuclear deal, giving it important nuclear, defence & space techs., & with drone strikes on Pakistan, the things changes to such an extent that now the Pak ambassador to UN calls US responsible for every major global issues.
BEING A SUPERPOWER HAS IT'S OWN TROUBLES