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 required amount for this rental property includes the first month's rent, the last month's rent, and a security deposit.
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
The national identification number required in the DS-160 application form is typically the unique identification number issued by your country's government, such as a Social Security Number in the United States or a National Insurance Number in the United Kingdom.
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