The core justification for the 20-year military engagement in Afghanistan was preventing terrorism in the West. However, the years since the U.S. withdrawal have seen no major surge in attacks, fundamentally questioning the validity of this long-held strategic assumption.

The policy of rotating commanders on one-year tours was a critical strategic flaw in Afghanistan. Each new commander arrived believing they had the "recipe for success" and would change the strategy, resulting in a series of disconnected, short-term plans that prevented long-term progress.

The current conflict between Pakistan and Afghanistan is complicated by a history of shifting alliances. Many Taliban leaders now being targeted by Pakistan's military once found refuge in Pakistan with the support of the country's security services during the US and NATO mission in Afghanistan, illustrating the region's complex dynamics.

A critical U.S. failure was not pursuing a serious peace process at the peak of its military power in Afghanistan. By waiting until its influence was declining, the chance of a negotiated settlement became vanishingly small, as the Taliban's incentive to compromise had evaporated.

For two decades, Afghanistan was a top U.S. priority, consuming vast resources. The fact that the U.S. could completely disengage with no apparent negative strategic consequences suggests the threat was exaggerated or the core mission had already been achieved long before the withdrawal.

Strategic failures in conflict often stem not from failing to predict an enemy's action, but from misreading their core motivation. The greatest error is assuming an adversary will act rationally when they are willing to endure immense self-harm, like economic collapse, solely to retain power.

The current conflict between Afghanistan and Pakistan, driven by the Taliban sheltering TTP militants, is not a new dynamic. It's a direct reflection of the 'we won't fight your war on our soil' policy that Pakistan itself used for 20 years to harbor the Afghan Taliban.

A core, flawed assumption of the Afghanistan campaign was that Pakistan would eventually become an ally and deny safe haven to the Taliban. The U.S. never held Pakistan accountable for its role as a sanctuary and logistics hub, which fatally undermined the entire operation.

Nations like the US and USSR prolong involvement in failed conflicts like Afghanistan primarily due to "reputational risk." The goal shifts from achieving the original mission to avoiding the perception of failure, creating an endless commitment where objectives continually morph.