As reported by Censor.NET citing Radio Liberty, this is how Kerry responded to Trump's controversial remarks on the alliance.
"I want our NATO partners to be clear where we stand. This administration, like every single administration Republican or Democratic alike since 1949, remains fully committed to the NATO alliance and to our security commitments," Kerry said in Washington on July 21.
He also recalled Article 5 of the North Atlantic Treaty, which states that an attack on any member state is considered an attack on every NATO member.
Earlier this week, Republican presidential candidate, billionaire Donald Trump said that, if elected, the United States might not necessarily guarantee the security of all NATO members. In an interview with The New York Times, he said the U.S. would render support to NATO members, in particular in the event of an attack by Russia, only "if they fulfill their obligations to us."
Trump said this also applies to the Baltic countries, where the Alliance built up its military presence after Russia's annexation of Crimea in 2014 and Moscow's role in the conflict in eastern Ukraine. The presidential candidate also expressed an intention to reduce military expenditures to assist the allies that the United States has incurred in recent years.
Trump offered reassurance that the United States, with him as president, will not try to influence other states and will pay more attention to domestic problems.
The U.S. presidential election is scheduled for Nov. 8, 2016. Donald Trump was approved as the Republican candidate at last week's national security committee platform meeting in Cleveland, Ohio.
Former U.S. Secretary of State Hillary Clinton, whose candidacy is to be approved at a Democrats congress, is expected to become Trump's main rival.