ForumIAS LATEST
- Prelims Test Series (PTS) for Prelims 2027 starts 11th Oct. 2026 Click Here to know more →
- [Pre-order] Ethics Redbook 3rd Edition: Delivery starts from 10th October onwards Click Here to Read More →
- 21 Sept. | Forum Residential Coaching (FRC) for UPSC preparation Click Here to know more →
- 21 Sept. | GS Advance Program (GSAP) for UPSC 2027 Mains starts from 10th Oct. Click Here to Read More →
- The US could offer India the fifth-generation F-35 fighter jet if India cancels the S-400 air defence system deal with Russia.The US has increased pressure on India over the S-400 deal that was signed in October,2018.
- US official had said that India should not assume that it will get a waiver from U.S. sanctions if it goes ahead with its purchase of the S-400 Triumf missile system from Russia.
- India is also keeping a close watch on what happens with Turkey that has already signed up for the S-400 and has been threatened by the US with sanctions and the cancellation of its contract for F-35s.
- Further,India’s planned defence procurement of S-400 Triumf missile system from Russia could potentially come under US sanctions under Countering America’s Adversaries through Sanctions Act (CAATSA).
- USA’s National Defence Authorisation Act (NDAA) allows the President to grant waivers from CAATSA sanctions under certain conditions.Under the Act,US President is also empowered to impose sanctions on persons engaged in a significant transaction with Russian defence and intelligence sectors.
- S-400 Triumf Missile System is a mobile, surface-to-air missile system (SAM). It is capable of engaging aircraft, UAVs, cruise missiles, and has a terminal ballistic missile defense capability. It has an operational range of over 400 kms.
- The S-400 Triumf is known as the SA-21 Growler by the North Atlantic Treaty Organisation (NATO). NATO members consider the S-400 a major threat because of its long range.



