WASHINGTON — Donald J. Trump turned his attention to national security and military readiness on Wednesday, saying in a speech that his approach to foreign policy could be summed up in three words: “peace through strength.”

Mr. Trump, the Republican presidential nominee, offered many facts to support his vision and outlined the approach a Trump administration would take on issues related to national security. We found five of his key claims or proposals to be misleading or consistent with current policy.

On Military Spending

“As soon as I take office, I will ask Congress to fully eliminate the defense sequester and will submit a new budget to rebuild the military.”

The military, Mr. Trump said, needs to be expanded and equipped with a new generation of aircraft and other equipment. The changes he proposed — such as adding about 90,000 soldiers to the Army and expanding the Navy to 350 ships — would require tens of billions of dollars a year in additional military spending (expanding the Army alone could cost more than $10 billion a year). To get the needed money, Mr. Trump said he would call on Congress to reverse the cuts to military spending made as part of the budget sequester in 2013, which was the result of a compromise reached between Democrats and Republicans.