US Secretary of State John Kerry has arrived in Vienna for talks with foreign ministers about Tehran's nuclear program.
Iran and the six powers- Britain, the US, France, Germany, Russia and China- aim to reach a long-term deal to end the decade-old nuclear standoff by July 20.
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People are being urged to look out for their neighbours this winter in a bid to reduce the number of deaths during the cold weather.
International Development Secretary Justine Greening is to visit an Ebola training academy and a treatment facility in Sierra Leone.
Workers tackling Ebola in Sierra Leone are concentrating on changing burial traditions in an attempt to stem the spread of the disease.