Claim: Russia and Iran signed the contract for Bushehr's first power unit in 1995, and the plant began operating in 2011.
Verdict: Correct (75% confidence)
Explanation: According to etc.bellona.org, Russia signed contracts in 1995 to complete the Bushehr power unit using a VVER-1000 reactor. This is further supported by armscontrol.org, which confirms that Russia agreed in 1995 to finish the reactor. Additionally, nti.org states that the Bushehr plant began operating in 2011, corroborated by aa.com.tr, which also confirms the plant's operational start in 2011. The evidence from these sources directly supports both sub-claims of the contract signing and the oper...