In a bid to save the CIA’s drone campaign against al-Qaida in Pakistan, U.S. officials offered key concessions to Pakistan’s spy chief that included advance notice and limits on the types of targets. But the offers were flatly rejected, leaving US-Pakistani relations strained as President Barack Obama prepares to meet Tuesday with Pakistan’s prime minister.

The U.S. offered to give Pakistan advance notice of CIA drone strikes against targets inside its borders, in a bid to keep Pakistan from blocking arguably one of America’s most potent tools against al-Qaida.