Beijing said Thursday it was willing to mediate between Pakistan and Iran following an exchange of fire against militant targets in their border region, including a strike that Tehran said killed at least seven civilians. “The Chinese side sincerely hopes that the two sides can exercise calm and restraint and avoid an escalation of tension,” foreign ministry spokeswoman Mao Ning told a regular press conference. “We are also willing to play a constructive role in de-escalating the situation if both sides so wish,” she said. Both countries are close partners of Beijing and members of the Shanghai Cooperation Organisation. Mao reiterated Iran and Pakistan were “friendly countries to China, and countries with important influence”.