"halted its efforts" is a grammatically correct and commonly used phrase in written English.
It refers to the act of stopping or pausing one's actions or efforts. Example: The company announced that it has halted its efforts to expand into international markets due to the current economic climate.
But 24/7 halted its efforts to merge the data when the F.T.C. investigation of DoubleClick began.
Two years ago, American intelligence agencies published a detailed report concluding that Tehran halted its efforts to design a nuclear weapon in 2003.
In addition, Iranian officials accuse the Taliban of assisting drug-trafficking into Iran, a transit route for Afghan drugs on their way to EuropeA further worry for Iran is that the Taliban's advance has halted its efforts to repatriate the 2m or so Afghan refugees who, over the years, have found sanctuary in Iran.
And Iran has not halted its efforts to train insurgents and to send weapons and money in a bid for influence across the southern provinces of Iraq, General Odierno said, although Iranian agents "have reduced some of what they are doing".
After signing up some 30,000 customers in California, Enron, in February of last year, abruptly halted its efforts to sell electricity to homeowners.
Germany halted its efforts to become a leader in nuclear power.
(That is why the 2007 National Intelligence Estimate that said Iran had halted its effort to build a nuclear weapon was deceptive.
BLOOMBERG NEWS Auctionof of Irish Life Insurer Put on Hold | Irish Life and Permanent, the financial firm owned by Irish taxpayers, halted its effort to sell its life insurance subsidiary, Irish Life, because of what the Irish Department of Finance called a "very challenging market".
Comcast announced this morning that it's halting its efforts to acquire the film and television assets of 21st Century Fox.
But Ms. Rice made it clear that the Bush administration would not halt its efforts in those two countries.
The Fed, meanwhile, is already halting its efforts at tamping down long-term interest rates.
