The United States will continue to offer ideas to resolve the conflict in Ukraine, but cannot guarantee the success of these negotiations, said US Secretary of State Marco Rubio.
"We will continue to do what we can. They ask me to guarantee a [successful] result. "I can't do it," he said, referring to the progress of preparations for the upcoming tripartite negotiations on Ukraine in Abu Dhabi.
He also added that Washington can only support negotiations and contribute proposals that enable progress towards a diplomatic solution to the conflict.