John Kerry, the US Secretary of State, has welcomed the release in Ukraine of military monitors from the Organization for Security and Cooperation in Europe (OSCE) but said more steps were needed to de-escalate the crisis.
After landing in the Democratic Republic of Congo for a visit, he said: "We will both advance ideas about how to do that, without any promises of what those possibilities may produce. In the end, we reaffirmed our support for the OSCE."
Kerry said he spoke by phone with Russia's Foreign Minister Sergei Lavrov and that both would discuss with Switzerland's president ways the OSCE might "play a larger role in perhaps facilitating the de-escalation".
More top news
Patients are waiting hours in an accident and emergency department due to failings in care, a report into an under-fire trust has said.
A report into the care of people with learning disabilities has called for "immediate action" to protect patients.
A high number of people are fed-up with getting cold calls and want the government to do more to stop them.