Japan on Saturday lodged a protest over Russian Prime Minister Dmitry Medvedev's visit to one of four disputed Pacific islands which have strained ties between the two countries since the end of World War Two.
The collapse of planned peace talks between India and Pakistan hours before they were to start on Sunday has raised questions about the arch-rivals' willingness to overcome mutual mistrust, built since their separation almost seven decades ago.
Britain reopened its embassy in Tehran on Sunday, a striking signal of how Western ties with Iran have thawed since protesters ransacked the ambassador's residence and burned the Union Jack nearly four years ago.
Ukrainian President Petro Poroshenko called on all political forces in the country on Sunday to rally behind his plans for constitutional change aimed at ending a separatist conflict in the east and defeating what he termed the "Russian aggressor".
