- Swiss diplomat and OSCE representative Heidi Tagliavini;
- Former president of Ukraine and Ukrainian representative Leonid Kuchma;
- Russian Ambassador to Ukraine and Russian representative Mikhail Zurabov;
- DNR and LNR 'leaders' Alexander Zakharchenko and Igor Plotnitsky.


Another document that resulted after the Normandy 4 talks in Minsk is the "Declaration of President of Russian Federation, President of Ukraine, President of the French Republic, and Chancellor of the Federative Republic of Germany in support of the Complex of measures for implementations of Minsk accords, adopted on 12 February 2015.
This is a joint statement, in which four leaders, including Putin, support the 13-points document signed by the Trilateral contact group.
So, two top Russian officials, President Putin and Russia's Ambassador to Ukraine Zurabov admitted the use of one of the most sophisticated and modern Russian heavy arms in the war against Ukraine.
The most recent news about Tornado-S avoid mentioning this system being used in the Russian army, and merely focus on 'finalization of tests' of this system. At the same time, Russia's Ministry of Defense had "renewed" the purchase of Tornado-G and Tornado-S back in 2013.
While it is not clear how many Tornado-S systems there are in Russian army, but the first Tornado-G systems were delivered to troops back in December 2011. The producer of Tornado systems, NPO Splav started mass production of Tornado-G in December 2014.
The only operator of Tornado systems is Russia.
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