Ukraine is aiming to launch a 'big bang' style counter-offensive in order to break stalemated war, says military expert

• Ukraine's anticipated counter-offensive will be like a "big bang," a military expert told The Sun. 
• A 'concentrated' attack is needed to disrupt the stalemated war, Ben Barry said. 
• It is not clear exactly when the planned counter-offensive operation will occur. 

A retired British military brigadier believes Ukraine's anticipated counter-offensive will involve a "big bang" attack to disrupt the stalemated war that has been ongoing for more than a year.