Facing global commitments with finite resources, Biden has refused to make the hard choices that a successful grand strategy requires.

US military appears to be leaning toward a more risky approach as challengers develop means to counter its advantages.

Biden must honestly assess if it is worth starting World War III over a territory with little significance to overall US security.

Opinion: If the US isn't careful, deepening its security relationship with Pakistan could drag the US into Islamabad's internal conflicts.

Rather than bolster the security of Americans, expanding NATO increases the risk of the United States being drawn into a war with Russia.

The AUKUS pact raises serious questions about the future relationship between the United States and most of its European allies.

The best way to deter China from attacking Taiwan is to encourage Taiwan to invest in its own ability to make China pay if it ever resorts to force.

Keeping 70,000 US troops in Europe is simply unnecessary in today's security environment. Washington needs to recognize this reality.

The US military's train-and-equip programs start with lofty goals, but their record is riddled with failures and unintended consequences.

Biden can stick with Trump's approach to Iran, but that doesn't mean it will be any more effective now.

Joint military exercises aren't inherently bad, but US participation in them should align with US strategic national security interests.

The reason US forces are at risk of violence in the region is precisely because US forces are in the region.

Whether it's a marriage or geopolitics, the best bilateral relationships find areas of common interest while de-conflicting areas of dispute.

It would be a major mistake if Biden and his NATO colleagues simply wax philosophically and avoid making the real changes that NATO needs.

For the sake of the Syrian people, Assad should go, but that change of regime isn't going to happen at the US's behest.

If Biden and Putin do meet later this year, they shouldn't spend time rehashing their irreconcilable differences.

The world's two largest nuclear-weapons powers have a responsibility to reduce tensions between them.