PTR - August 28, 2014

Ukraine's President Petro Poroshenko calls on Moscow for a joint patrol of the border just hours after accusing Russia of invading Ukraine - Moscow says all reports of Russian troops on Ukrainian ground are unfounded; And the accusations also pushed Russian stock markets significantly down and the national currency also fell against both the dollar and euro; Aeroflot suffers a 40-million-euro loss in the first half of the year and blames Russia's economic slowdown.