Ukrainian President Petro Poroshenko delivered an emotional speech In Davos. During his address he was holding the piece of the bus which was exploded in Volnovakha.

"I promise you we will have absolutely clear and stable situation in Ukraine if Russia fulfils point number four -- close the border and withdraw all the foreign troops from my territory. Because now the date of our intelligence confirmed and independent sources, we have more than 9,000 troops of Russian federation on my territory, including more than 500 tanks and heavy artillery and armored personnel carriers. If this is not an aggression, what is an aggression?"- Petro Poroshenko stated