Somalis near the border with Ethiopia say that country's troops have crossed over, raising speculation of another battle with the militant Islamists closing in on Somalia's government.
The aid is partly to offset anger at the US-supported counterinsurgency campaign.
The 1.5 million displaced Pakistanis displaced are waiting in squalid camps to go home. The US offered $110 million in new aid on Tuesday.
Experts see the Islamic fighters as less of a risk than radical insiders gaining access to nuclear materials.
Readers write about whether Obama is putting Israel at risk, how Pakistanis view the world, electric vehicles, and why the death penalty must end.
As Afghan insurgents exploit popular anger at civilian deaths, the US is hitting back with its own message.
Why Pakistanis open their homes to refugees from the fighting in Swat Valley and Buner.
American lawmakers say they haven't been briefed on plans, as some in Pakistan describe the administration as 'confused.'