Recently, India signed a deal known as 'Action Plan for Prioritization and Implementation of Cooperation Areas in the Nuclear Field' with which of the following countries?

1. The question refers to a specific agreement signed by India: the 'Action Plan for Prioritization and Implementation of Cooperation Areas in the Nuclear Field'. 2. This deal aimed at strengthening collaboration in the peaceful uses of nuclear energy. 3. India signed this specific Action Plan with Russia in October 2018 during the 19th India-Russia Annual Summit. 4. While India has civil nuclear cooperation agreements with other countries like Japan, the UK, and the USA, the specific agreement titled 'Action Plan for Prioritization and Implementation of Cooperation Areas in the Nuclear Field' was signed with Russia. 5. Therefore, Russia is the correct answer.