Where are Russia's troops positioned near Ukraine's borders? - BBC News

Russia's President Vladimir Putin has ordered Russian troops into eastern Ukraine, after recognising two rebel-held regions as independent states.

Military units heading into Ukraine will be drawn from up to 190,000 personnel gathered close to Ukraine's borders in recent months.

Analysts agree that Russia has a range of options, should it decide to launch a bigger invasion, to take over the whole country.

Ros Atkins explores the key moments of Russia's military build-up in the crisis so far.