Sending more soldiers, or troops who actually fight, remains anathema in Germany.
On his visit, the first by a British foreign secretary to Mali, Mr Hague also met the commander of the AFISMA international force as well as the deputy commander of the EU mission training Malian soldiers and British troops serving under him.
Troops of soldiers have held a parade to mark their 2013 role as NATO's response force.
American commanders say the risks they face of backfilling their troops with Iraqi soldiers is manageable.
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It is also supplying up to 240 troops to train soldiers in Mali and neighbouring countries in the region.
Many of the U.S. troops killed were soldiers operating in the Baghdad area who were struck by roadside bombs, small-arms fire and indirect fire, according to military reports.
And a lot of times, military kids, they have to move often, because soldiers move -- our troops, they move every couple of years, and their families have to move, too.
Recently, U.S. Defense Secretary Robert Gates has been ratcheting up pressure on the other NATO allies to do more, asking for about 3, 500 soldiers to help train Afghan troops, 16 helicopters, and three infantry battalions with a willingness to fight.
U.S. troops rescued the seven soldiers April 13 after almost three weeks of captivity.
The BBC's Joseph Benamse in Bangui says France recently added 100 troops to its 200 soldiers stationed in CAR.
In terms of morale among troops, he says soldiers - both regular and reserve - were generally upbeat in Iraq.
The Duke of York has attended a parade in Shropshire to honour soldiers serving in Afghanistan and remember troops who died.
The Iraqi prime minister also has flooded the city with additional troops, bringing in soldiers from western Iraq along with their American advisers.
Troops from several African soldiers have been deploying to Mali to take over from the French-led mission in the run-up to elections due in July.
Chad had said its soldiers, fighting alongside the French troops, killed two top militant commanders, Abdelhamid Abou Zeid from al-Qaeda in the Islamic Maghreb, and veteran Islamist leader Mokhtar Belmokhtar.
Fighting between Islamist insurgents and Malian troops - backed by French soldiers - also continued in the central city of Gao.
Where possible, the foreign troops would operate alongside Afghan soldiers and police.
The South African National Defence Force Union (Sandu), which represents soldiers, said Mr Zuma should recall troops immediately, "even if it entails launching a military offensive to relieve our troops in distress", its national secretary Pikkie Greeff said.
After midnight, the boat disgorged some seventy Dutch soldiers, who opened the city to waiting troops.
France has 2, 150 soldiers in Mali and 1, 000 more troops supporting the operation from elsewhere.
France hopes West African soldiers will eventually take the lead alongside Malian troops in securing the country.
He made clear in his lightning visits to Kabul and to the base in southern France that lost many of the soldiers that he is committed to keeping French troops in Afghanistan, and that it was right to boost their numbers.
Once the Chadian troops leave, about 4, 000 soldiers from other African nations remain to aid Mali.
Chad, which is not part of the regional body Ecowas, is also sending 2, 000 soldiers to work in co-ordination with French troops.
Knight-Ridder newspaper reporter Jonathan Landay recently traveled with US troops in the same area where the soldiers were killed, and he joins us from Kabul.
Our correspondent says that many people have been killed in the fighting in Bangui including civilians, rebels and Chadian soldiers fighting alongside them, as well as loyalist troops and Libyan and Congolese fighters who are giving them support.
France has been pushing hard for the deployment of West African troops and the arrival of the first Nigerian troops should bring some relief to French soldiers who are only getting limited support from the fairly weak Malian army, analysts say.
It turns out that there is something American leaders can do to transform the effectiveness and survivability of infantry soldiers and Marine "ground-pounders, " troops who are obliged to perform today's tough jobs in urban settings and elsewhere pretty much the same way their grandfathers did in World War II.
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France has 2, 150 soldiers on Malian soil, with 1, 000 more troops supporting the operation from elsewhere.
The government's "Troops to Teachers programme" aims to get soldiers leaving the forces to retrain as teachers.
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