Government forces have been doing better over recent weeks, recapturing territory and re-opening key supply routes.
Britain has struggled to maintain two long supply routes, dividing scarce helicopters, engineers and medics.
Defense Secretary Panetta, who opposed apologizing, welcomed Pakistan's decision to reopen the supply routes.
WSJ: U.S. Apologizes to Pakistan, Says Supply Routes to Reopen
It managed to land a sea-borne force north of the camp and cut off supply routes.
But these links could equally serve as future supply routes for the Chinese navy.
The city is considered key in the war, because it straddles supply routes to the capital, Kabul.
Calculated risks were taken with flanks and supply routes in order to get to the city swiftly.
Over the summer, revolutionary fighters edged closer to Tripoli, cutting off key supply routes for Gadhafi's remaining forces.
But why is the whole process of resolving the issue of supply routes in such trouble at this point?
Now, Uzbekistan is back in focus, because of America's and NATO's need to find new supply routes into Afghanistan.
The Information Ministry said on Wednesday that the attacks were aimed at rebels who tried to block military supply routes.
If such attacks continue it could well force the U.S. to push Pakistan to allow heavier security on important supply routes.
The Free Syrian Army has been trying to seize a number of airbases in the area to disrupt regime supply routes.
The United States and Pakistan are making "diligent progress" on the question of reopening the supply routes, the U.S. president said.
Mr Zardari was quoted as saying that his government was in favour of reaching a deal with Nato on the supply routes.
But the agitators hold some important advantages especially the Madhesis, who live in an economically important area and control supply routes to the capital.
Violence has escalated in recent weeks, since the military began a new offensive on rebel fighters they accused of trying to block supply routes.
The government acknowledged earlier this month that it had been carrying out air attacks on rebel fighters who tried to block military supply routes.
It led to Pakistan blocking supply routes to coalition forces in Afghanistan and to Pakistan's boycott of the Bonn conference on the future of Afghanistan.
In addition to an agreement on reopening the supply routes, the Obama administration hopes to obtain greater Pakistani involvement in peace talks with the Taliban.
The effort apparently succeeded in flooding major Viet Cong supply routes and denying the use of trails and roads by extending the monsoon season over North Vietnam.
The issue of drone strikes, along with Pakistan's refusal to re-open Nato supply routes to Afghanistan, has led to increased tension in US-Pakistan relations in recent months.
It probably, most importantly, has a very far-reaching security provision, including disarming the Janjaweed, a cease-fire, a demilitarization of camps of displaced people and humanitarian supply routes.
Hezbollah would benefit not only by supporting its ally, Mr. Assad, but also by keeping one of its own key supply routes from Iran, and through Syria from rebel hands.
For one observer of the crimes carried out in the fight for lucrative drug supply routes into the US, the numbers of those missing may be an underestimate.
U.S. officials said the closure of supply routes through Pakistan was having no effect on day-to-day U.S. operations in Afghanistan but acknowledged that it would eventually complicate withdrawal plans.
WSJ: U.S. Apologizes to Pakistan, Says Supply Routes to Reopen
The PKK has also helped to disrupt vital supply routes for relief to the Iraqi Kurds at a time when supplies and foodstuffs were critical to surviving the harsh winter.
Indian military planners feel the only practical solution is to mount a swift, surgical strike across the LOC that would both encircle the intruders and cut off their supply routes.
U.S. and British airstrikes have cut off the Taliban air supply routes to the north, leaving the Taliban only a long circular route through western Afghanistan to supply the north, Abdullah said.
The U.S. military has multiple routes to keep supplies delivered to landlocked Afghanistan, and had been working to reduce dependence on supply routes that go through Pakistan before last month border closing.
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