Heavy fighting has taken place between government and rebel forces in eastern Democratic Republic of Congo.
The Red Crescent has suspended some of its operations in Aleppo because of the heavy fighting.
But heavy fighting has prevented its small team in Baghdad from moving about more.
Afghanistan has seen heavy fighting in recent weeks as warmer, spring-time weather allows insurgents to move more freely.
Heavy fighting has been continuing in Libya between government and rebel forces for the eastern town of Brega.
Meanwhile, both the government and the rebels reported heavy fighting at Tiebissou, 40km north of the administrative capital, Yamoussoukro.
Heavy fighting erupted in eastern Sri Lanka between government troops and rebels from the Liberation Tigers of Tamil Eelam.
Heavy fighting has stopped, but skirmishes continue between armies dug in round honeypot centres, such as the diamond mines.
In point of fact, what we've been hearing is explosions intermittently throughout the day and heavy fighting again last night.
In 1943, after a week of heavy fighting, German field marshal Friedrich von Paulus surrendered to the Russians at Stalingrad.
Heavy fighting between government and rebel forces continued around the city, with the government carrying out air strikes in the suburbs.
The Syrian opposition's announcement came amid reports of a deadly explosion and heavy fighting in an eastern part of the Syrian capital, Damascus.
Thirteen Chadian soldiers and 65 Islamist insurgents have been killed in heavy fighting in a remote part of northern Mali, Chad's military says.
An attempted coup against Mauritania's president, Maaouya Sid Ahmed Ould Taya, was put down after heavy fighting in the centre of Nouakchott, the capital.
Heavy fighting ahead held up the 1st Battalion, 7th Marines, for part of the night, reported CNN correspondent Martin Savidge, who is embedded with the unit.
So, let's talk - we're really talking about the east of the continent and the last week, dozens people have been killed in heavy fighting in and around Somalia's capital, Mogadishu.
One of the biggest battles in the area was on Thursday when the Syrian army captured Tal al-Nabi Mindo, a village near the Lebanese border, after a day of heavy fighting.
Mika Yamamoto, a 45-year-old video and photo journalist, was shot dead in Aleppo on 20 August while reporting on heavy fighting in the city for the Japan Press news agency.
In international news, China yesterday helped facilitate an agreement between Burmese and ethnic Kachin rebel leaders in southwest Yunnan to continue holding talks following weeks of heavy fighting, Xinhua reports.
Speaking to Sky News, Mr Obama said although forces were currently engaged in heavy fighting, new strategies for building bridges with Afghan society would be considered once the country had held its presidential election.
Supervision Mission in Syria (UNSMIS), Sausan Ghosheh said U.N. observers reported heavy fighting in Rastan and Talbiseh, north of Homs, with artillery and mortar shelling and firing from helicopters, machine guns and smaller arms.
For the British, certainly, this war is as much about heavy metal fighting as it is about winning hearts and minds.
Troops had expected to encounter heavy urban fighting in their push to clear the city of insurgents before elections in January.
Damascus has seen heavy recent fighting but rebels have made no breakthrough.
"The fighting is heavy and it is ongoing, " Malian army Capt Modibo Naman Traore told the Reuters news agency, adding that the army was in the process of "encircling" the militants.
Heavy rain means that the fighting is now more subdued and largely confined to the diamond-producing areas.
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