In his first interview since being forced from his post, Gen Syrskyi speaks about Ukraine's future in the war.
Despite the US president announcing energy infrastructure would not be targeted strikes have continued, Ukraine says.
As election day looms, the president turns his eyes overseas for help with a pressing domestic problem.
While Ukraine's Volodymyr Zelensky suggests he would sign up to a ceasefire on energy infrastructure, Russia has said little.
President Volodymyr Zelensky says Ukraine is willing to back an energy ceasefire if Moscow does the same, adding it could "become a major step toward ending the war"
The BBC's Dan Johnson reports from Kyiv, where Ukrainians face another winter with electricity outages.
Both conflicts have led to less diesel being exported - but the data shows more has been lost from the Middle East.
Zelensky has welcomed Trump's comments about a ceasefire on attacks of energy facilities, which Moscow is yet to acknowledge.
The Polish ambassador said the "hospitality and solidarity" shown here needed to be remembered today.
Both Republican and Democratic lawmakers have criticised the deal, which was announced weeks before the US midterm elections.
Ukraine's leader says he will support such a truce if Moscow does, after initially expressing surprise at Donald Trump's announcement.
The US president made the announcement in a social media post, which was an apparent surprise to Ukraine and Russia is yet to comment.
