Violations of the ceasefire in eastern Ukraine have reached their highest level since the Minsk II agreement was signed in February, and President Petro Poroshenko has warned that war could re-erupt "at any moment".
Russia's War Against Ukraine
Financial Times: Russia rattles sabres to keep Ukraine from the West
A masked pro-Russian gunman wearing a ribbon of Saint George guards at a check-point near the eastern Ukrainian city of Slavyansk on May 23, 2014, as people in a bus watch.
