The term "two-state solution" is sometimes mentioned in the news in the context of the affairs of

1. A

   China

   (a) China. Cross-strait and South China Sea issues are not labelled the two-state solution. This is not the key.

2. B

   Israel

   (b) Israel. (b) Official key: The two-state solution means an independent Palestine alongside Israel, roughly on 1967 lines with negotiated swaps. That is the stored key.

3. C

   Iraq

   (c) Iraq. Iraq’s federal and sectarian settlement is not the two-state formula in this usage. This is not the key.

4. D

   Yemen

   (d) Yemen. Yemen’s war is not framed as a two-state solution. This is not the key.

Summary. Official key is (b) Israel. In diplomacy the two-state solution is the Israel–Palestine track. China, Iraq and Yemen refer to other conflicts. Honour the stored letter (b).