← Topics 0/10 answered

Topic 101 · International Relations & Organisations

Chagos treaty: UK-Mauritius sovereignty deal

10 MCQs · tap an option to check it · All answers

Revise the 12 points first Book 1 RATNA

Core Trigger: The treaty signed 22 May 2025 was still not in force; its UK Bill fell at prorogation on 29 April 2026.
Treaty Terms: Mauritius gets sovereignty; the UK leases Diego Garcia for 99 years, extendable by 40.
Signatories: Then UK Prime Minister Keir Starmer and Mauritius Prime Minister Navin Ramgoolam signed it; Andy Burnham has been UK PM since 20 July 2026.
Key Term: Leaseback: sovereignty passes to Mauritius while the UK keeps using the base.
Money Figures: The UK pays about 101 million pounds yearly, plus a 40 million pound Chagossian trust fund.
Stakeholders: On 13 April 2026 the UK told the Commons the US would not clear the updated 1966 exchange of notes.
India Link: India's MEA welcomed the treaty on 23 May 2025, citing its stand on decolonisation and territorial integrity.
Location: Diego Garcia lies in the Indian Ocean, about 1,796 km south-west of India.
Founded: Britain detached Chagos from Mauritius on 8 November 1965, creating the British Indian Ocean Territory.
Landmark: ICJ advisory opinion, 25 February 2019: Mauritian decolonisation was not lawfully completed; the UK must end administration (13-1).
Articles: UN Charter Article 96 lets the General Assembly seek advisory opinions; resolution 71/292 (22 June 2017) referred Chagos.
Doctrine: ICJ advisory opinions are non-binding; a signed but unratified treaty binds no one until it enters into force.

Question 1 of 10

The UK Bill to implement the Chagos treaty fell at prorogation on which date?

Show answer

Answer: (B) 29 April 2026

Core Trigger: The treaty signed 22 May 2025 was still not in force; its UK Bill fell at prorogation on 29 April 2026.From Book 1 RATNA, topic 101, point 1

Question 2 of 10

For how many years does the treaty let the UK lease Diego Garcia, extendable by 40?

Show answer

Answer: (A) 99 years

Treaty Terms: Mauritius gets sovereignty; the UK leases Diego Garcia for 99 years, extendable by 40.From Book 1 RATNA, topic 101, point 2

Question 3 of 10

Which Mauritius Prime Minister signed the Chagos treaty?

Show answer

Answer: (D) Navin Ramgoolam

Signatories: Then UK Prime Minister Keir Starmer and Mauritius Prime Minister Navin Ramgoolam signed it; Andy Burnham has been UK PM since 20 July 2026.From Book 1 RATNA, topic 101, point 3

Question 4 of 10

In the Chagos deal, what does 'leaseback' mean?

Show answer

Answer: (D) Sovereignty passes to Mauritius; UK keeps using base

Key Term: Leaseback: sovereignty passes to Mauritius while the UK keeps using the base.From Book 1 RATNA, topic 101, point 4

Question 5 of 10

The treaty provides a trust fund for Chagossians of how much?

Show answer

Answer: (A) 40 million pounds

Money Figures: The UK pays about 101 million pounds yearly, plus a 40 million pound Chagossian trust fund.From Book 1 RATNA, topic 101, point 5

Question 6 of 10

India's MEA welcomed the treaty, citing India's stand on which principles?

Show answer

Answer: (D) Decolonisation and territorial integrity

India Link: India's MEA welcomed the treaty on 23 May 2025, citing its stand on decolonisation and territorial integrity.From Book 1 RATNA, topic 101, point 7

Question 7 of 10

Diego Garcia lies about how far south-west of India?

Show answer

Answer: (B) 1,796 km

Location: Diego Garcia lies in the Indian Ocean, about 1,796 km south-west of India.From Book 1 RATNA, topic 101, point 8

Question 8 of 10

In which year did Britain detach Chagos from Mauritius, creating the British Indian Ocean Territory?

Show answer

Answer: (A) 1965

Founded: Britain detached Chagos from Mauritius on 8 November 1965, creating the British Indian Ocean Territory.From Book 1 RATNA, topic 101, point 9

Question 9 of 10

Consider the statements. 1. The ICJ advisory opinion of 25 February 2019 held that Mauritian decolonisation was not lawfully completed. 2. The opinion was adopted unanimously. Which is/are correct?

Show answer

Answer: (A) Only 1

Landmark: ICJ advisory opinion, 25 February 2019: Mauritian decolonisation was not lawfully completed; the UK must end administration (13-1).From Book 1 RATNA, topic 101, point 10

Question 10 of 10

Consider the statements. 1. ICJ advisory opinions are binding on the states concerned. 2. A signed but unratified treaty binds its parties from the date of signing. Which is/are correct?

Show answer

Answer: (D) Neither

Doctrine: ICJ advisory opinions are non-binding; a signed but unratified treaty binds no one until it enters into force.From Book 1 RATNA, topic 101, point 12

Answer all ten to see your score

0 of 10 answered · 0 correct

See all answers →Next topic →

Track your weak chapters across all 380 topics — sign in to the free app.

Android app Web app (sign-in needed)

Open this topic in the app (sign-in needed)