The US State Department approved Kuwait’s request for $1.425 billion in upgrades for the Gulf country’s Patriot missile defense systems.

Why it matters:  Thursday’s sale approval comes on the heels of a US Navy contract awarded to Boeing to build more than a thousand land-attack and anti-ship cruise missiles for Saudi Arabia and Qatar. In a statement, the US Defense Security Cooperation agency said the Patriot upgrade will help Kuwait defend its “critical oil and natural gas infrastructure.”

The United States has sought over the last decade to integrate the missile defenses of the Gulf Cooperation Council countries with limited success. Iran, which has perhaps the largest ballistic missile arsenal in the Middle East, has continued to test and develop conventional ballistic missiles since the 2015 Iran nuclear agreement, which does not explicitly forbid such activities.

The Donald Trump administration’s 2018 withdrawal from the deal and wave of economic sanctions on Iran have brought the United States and Iran to the brink of military confrontation in the Middle East, culminating in the US military killing senior Iranian commander Qasem Soleimani in Baghdad.