U.S. President Donald Trump, who ended a summit with North Korean leader Kim Jong Un earlier this year without a nuclear deal, said on Friday a lot of progress was being made towards an agreement and welcomed support from Russian President Vladimir Putin, reports Reuters.

Putin said after holding his first face-to-face talks with North Korean leader Kim Jong Un on Thursday that U.S. security guarantees would probably not be enough to persuade Pyongyang to shut its nuclear program.