Brent Scowcroft, national security adviser under Republican presidents Gerald Ford and George H.W. Bush, endorsed Hillary Clinton for president on Wednesday.

“Secretary Clinton shares my belief that America must remain the world’s indispensable leader,” Scowcroft said in a statement, touting her experience as secretary of state. “She understands that our leadership and engagement beyond our borders makes the world, and therefore the United States, more secure and prosperous. She appreciates that it is essential to maintain our strong military advantage, but that force must only be used as a last resort. She brings deep expertise in international affairs, and a sophisticated understanding of the world that are essential for the Commander-in-Chief. Her longstanding relationships with a wide array of world leaders, and their sense of her as a strong and reliable counterpart, make her uniquely prepared for the highest office in the land.”

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“I believe Hillary Clinton has the wisdom and experience to lead our country at this critical time,” Scowcroft reaffirmed.

Scowcroft’s endorsement comes after his fellow foreign-policy realist Richard Armitage, deputy secretary of state under George W. Bush, said last week he would support Clinton over Donald Trump if he is the Republican nominee.