U.S. President-elect Joe Biden said Tuesday he would work to rebuild international institutions he said were damaged during Donald Trump’s presidency and that his message to world leaders is that "America is back.”

Biden met Tuesday with defense and intelligence experts, many of whom worked for President Barack Obama when Biden was vice president. He had gathered them together because the Trump administration has blocked him from getting the intelligence briefings traditionally granted the president-elect.

"We’ve been through a lot of damage done over the last four years, in my view. We need to rebuild our institutions and my workforce to reflect the full strength and diversity of our country,” Biden said. "We need to focus on readiness for whatever may come.”