Washington, Aug. 18 -- Washington continues to keep a close watch on developments between India and Pakistan "every single day", US Secretary of State Marco Rubio said on Sunday (local time) days after US President Donald Trump once again claimed that he had brokered a ceasefire between the two countries.

Rubio's comments came in response to a question in an interview to NBC News Meet The Press on the sharp rise in Russian attacks on Ukraine after Trump assumed charge at the Oval Office.

"The only way to have a ceasefire is for both sides to agree to stop firing at one another. And the Russians just haven't agreed to that. One of the complications about ceasefires is they have to be maintained, which is very difficult. I mean, every sin...