To warn travelers of potential dangers overseas, the US State Department has updated its travel advisory for countries, including India and Pakistan.
The advisory said in northeastern states, incidents of violence by ethnic insurgent groups.
"Over the past six months, there have been at least 40 significant terrorist attacks across Pakistan, resulting in over 225 deaths and 475 wounded, most of which occurred in Balochistan, KPK, and the FATA".
The US said its new travel advisory is simpler and replaces all previous travel warnings and alerts. "In the past, there have been large-scale terrorist attacks resulting in hundreds of casualties", it says.
The United States unveiled a travel advisory on Wednesday urging its citizens to reconsider their plans provided they were visiting Pakistan, citing multiple security-related issues.
Travellers are told to "exercise increased caution in Tanzania due to crime, terrorism, and targeting of LGBTI persons".
How does the rest of the world rank?
Neighbouring countries ranked at level one include Macau, Singapore, Japan and South Korea.
The State Department has not changed its methods for determining the country-specific threats.
Explaining the revised U.S. notification system, State Department official Michelle Bernier-Toth told reporters that "over the years, we've come to recognise that sometimes our various documents were not readily understood". "These are not political documents".
"So it's going to be very obvious", Bernier-Toth said.
Major European allies like Britain, France and Germany are put in Level Two with "exercise increased caution", warning while Uzbekistan got Level One for which the American should "exercise usual precautions". Turkey, Russia and Venezuela are considered level 3.
"We wanted to make sure that the USA traveling public was aware of all those restrictions that we impose on ourselves", Bernier-Toth said.
Some countries have complained in the past that warnings exaggerate dangers and damage tourism, or suspect they have been subjected to a United States diplomatic rebuke.
But travelers were often confused on the difference between warnings and alerts, or between emergency and security messages, Bernier-Toth said.
Officials in the Kenyan government and the country's tourism industry are likely to welcome the changes initiated by the Trump administration.
Kenya is placed in the second tier under the new system.