Washington had information that the equipment and forces were being prepared by Moscow "to provide active support for separatist fighters," a senior US administration official said.
The US was "confident" that Moscow last week sent tanks and rocket launchers from the deployment site in southwest Russia into eastern Ukraine where pro-Russian separatists are fighting to break away Kiev, the official said, asking not to be named.
US officials have information that "additional tanks... and artillery have been accumulated" at the same site, adding they were of the same type as materiel used by Ukrainian forces which are trying to quell the offensive.
The 14-point initiative came after two calls made by Poroshenko to Russian strongman Vladimir Putin within 72 hours in the belief that no truce could work without his support.
Most of the equipment being gathered in southwest Russia is no longer in use by Russian forces "and we believe that Russia may soon provide this equipment to separatists," the US official said.
As the equipment is still used by Ukrainian forces, the aim appears to be "to mask Russia's hand" in supporting the separatists.
Some of the troops were "within a handful of kilometres" of Ukrainian territory, "the closest they have been since the invasion of Crimea" earlier this year.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
