US Senator Marco Rubio has positioned the International Criminal Court's ongoing investigation into American military and intelligence personnel as a matter of national defense, arguing that the probe threatens the safety of US soldiers deployed overseas.

The comments mark a shift in rhetoric, framing the legal dispute not merely as a sovereignty issue but as a direct risk to active-duty forces.

The ICC has maintained an open investigation into US personnel for several years, a process that has yet to conclude.

Rubio's intervention highlights the growing political pressure within Washington to counter the court's jurisdictional reach, particularly as the administration continues to urge allied nations to take a stand against the tribunal.

This development follows the US announcement of new sanctions against the ICC earlier this month, signaling an escalation in the diplomatic conflict.

The administration's stance remains firm that the court lacks legitimacy over US citizens, a position that has strained relations with European partners who support the court's independence.