1917, abdication, aeroplanes, Allies, Battle of Messines, Belgium, Charles Jonnart, English Channel, Flanders, Germany, Great Britain, Greece, King Constantine I, Messines, monarchy, National Schism, Royal Navy, Russia, Russian Revolution, seaplanes, trenches, Warneton, Wytschaete
British advance on southern wing of new front east of Messines-Wytschaete Ridge; trench system near La Potterie Farm captured on a mile front, and progress made towards Warneton. Two German seaplanes brought down in the Channel by a British drifter which attacked a squadron of five. Text of British reply to Russian Note of May 3 issued; agreements between Allies believed, broadly speaking, conformable with principles laid down by Russian Government, but if so desired treaties can be re-examined and, if need be, revised. M. Jonnart, Allied Plenipotentiary in Greece, demands abdication of King Constantine.