The Russian president and Guinea-Bissau’s Umaro Sissoco Embalo have agreed to boost ties, according to the Kremlin Russian President Vladimir Putin has held talks with Guinea-Bissau’s leader, Umaro Sissoco Embalo, on expanding trade and investment, and boosting humanitarian cooperation, the Kremlin has said. The phone conversation on Thursday followed on from agreements reached between the two leaders when the West African nation’s president visited Moscow last May. “The presidents agreed to