Yes, the Americans have lost all credibility. From the farcical war in Iraq which was entirely based on lies to the bogus war in Afghanistan. It is not very hard to imagine how ISIS/AQ gained strength and spread like an uncontrollable virus throughout the Middle East after the failed US occupation of Iraq. Today, the entire Middle East and even Europe is bearing the brunt. Heck, even the Taliban are in the end a US creation. Needless for me to delve into history. If this is what you call credibility... Only the weak countries listen to the US. The strong countries protect their interests at all cost.
The world doesn't listen to the US. Look at China, Iran and Russia for instance. Every country protects its interests. From Crimea to trade wars. Just look at the Iranian nuke deal. You name it. The US has a cunning way of blackmailing the weaker countries. This is not what you can term as listening, but this is forceful blackmail. Times have changed though. No one cares about the US. This is why a mad clown like Trump is taken seriously. When Trump says that the US doesn't win anymore he is right. When Trump says that the US isn't taken seriously anymore he is right.
Taliban movement has an even stronger footprint across the border in Afghanistan. Apart from certain areas in Kabul, Afghans are fully at the mercy of despot warlords and the Taliban. Pakistan has greatly diminished Taliban movement inside Pakistan. From Zarb-e-Azb to fencing the border with Afghanistan. At least Pakistan is taking productive steps to curb Taliban presence. What is the US doing in Afghanistan apart from being childish and resorting to blame games? Instead, the US opposes every proposal by Pakistan to counter the Taliban in Afghanistan. The biggest proof is that China has recently invested tens of billions of dollars in Pakistan because stability has returned.
What is FM Mullah and other anti-Pakistan TTP elements doing in Afghanistan? Why aren't they attacked and destroyed when Pakistan provides evidence regarding their presence? It is very easy to blame Pakistan for the Haqqani network. It takes two to tango. The Afghans and the Americans have indeed provided safe-havens to these anti-Pakistan groups which are trained and provided arms to kill innocent Pakistanis. Many attacks in Pakistan can be traced back to Afghanistan.
The Osama drama has been refuted by a reputable journalist in the US. It is highly questionable how US marines entered Pakistan, resorted to gun fire for hours near a heavily guarded military compound and all this "unnoticed". Even a chopper went down up in flames after an explosion. I'm not buying it and neither are many others. This was all in cahoots with the Pakistani leadership.
Mullah Akhtar Mansour was only killed inside Pakistan once he entered from Iran. It is bad for these Mullahs to be in Pakistan, but it is perfectly okay for them to be in Qatar, Iran and elsewhere. We know how the world works. Double standards and hypocrisy have become the order of the day.