The "catch" to this question is the word, "grave". This word is subject to interpretation. What is grave to some might not be grave to others.
The National Security Council is under the executive branch of government.
The National Security Council
The ministry of national security.
You can find information about National Security on the government's national security website which posts the current threat level and additional information pertaining to national security.
providing the country with national security
social security tax
The National Security Council is included in the executive branch of government. This group consists of senior National security advisors to the President of the United States and cabinet members.
Brajesh Mishra
to protect national security
the internal security act
SOcial Security Tax:D
social security tax