Both Beijing and Moscow lack the network of allies one needs to wield influence, US Defence Secretary Mark Esper said, adding that their lawless behaviour will scare away potential partners.
The assault by gunmen on motorbikes comes amid other recent terrorist incidents in Pakistan.
The adventurer found Khyber Pakhtunkhwa, a former militant hotbed, to be a highlight of her trip.
The TTP, which announced the reunification of its various breakaway factions in September, has been trying to demonstrate its presence and re-establish contacts in Karachi.
Beijing has violated the sovereignty of Taiwan and India in recent weeks, sparking worry among China's other neighbours that this might be a new pattern.
The effort to revive the resort is expected to spur more development in the region as security improves.
The police force this year launched various initiatives to bolster the emergency response force and help residents register complaints and share information on militant activity.
A key focus for China's military is power projection, which translates to the establishment of military bases around the world.
Tens of thousands of security personnel have been deployed to ensure a peaceful and safe Ashura on August 30.
The bazaar was once the Tehreek-e-Taliban's main centre for conducting militant activities. Now it houses restaurants, a barbershop, a dental clinic, and more.