The West accuses Russia of sending army units into Ukraine as
rebels in the country's east seize territory from government
forces.  06:48, UK, Thursday 28 August 2014  The United States
has claimed that Russia is directing a counter offensive in
support of pro-Moscow rebels in eastern Ukraine.  Separatists
have seized control of territory in the east after government
forces retreated from the advancing rebel troops.  Ukraine says
Russian soldiers in armoured vehicles have crossed the border
near where a group of paratroopers were detained earlier this
week.  Kiev has also accused Russia of pushing columns of tanks
and weaponry towards towns in south-eastern Ukraine.  State
Department spokesman Jen Psaki said a Russian-directed counter
offensive "is likely under way in Donetsk and Luhansk".
"Clearly that is of deep concern to us," she said.  Luhansk in
eastern Ukraine.  Poland's Prime Minister Donald Tusk also said
Nato and Polish intelligence have evidence of regular Russian
army units operating in Ukraine.