Pakistan on Friday rejected recent assertions by U.S. President Barrack Obama that Pakistan and Afghanistan were among the countries that would likely face "decades" of instability.

"Whatever the U.S. president said about instability in Pakistan and Afghanistan are his predictions; they have nothing to do with realities on the ground," Pakistani foreign affairs adviser Sartaj Aziz told reporters, according to state-run Radio Pakistan.

In a national address delivered earlier this week, Obama had said that instability would "continue for decades in many parts of the world", including the Middle East region, Afghanistan and Pakistan, along with "parts of Central America, Africa and Asia".

Aziz, for his part, challenged the U.S. president's assertions, stressing that Pakistan was "taking decisive action against terrorism and militancy" and that "the days to come will witness more stability here".

Pakistan's foreign policy advisor was referring in particular to Islamabad's ongoing military offensive against Taliban militants in the restive North Waziristan tribal region, which since mid-2014 has led to a significant reduction in militant activity.

Aziz went on to note that, while Afghanistan was currently plagued by instability, Islamabad had recently redoubled its efforts to establish security in the war-wracked country -- a reference to Pakistani attempts to persuade the Taliban to resume stalled peace talks and end its 14-year-long insurgency.