text:  The government of Pakistan says it will seek to ban the party of the main opposition leader and former Prime Minister Imran Khan. The information minister said his administration would petition the Supreme Court. He accused Mr Khan of leaking state secrets and inciting anti-government riots after his arrest last year. Ukraine's military says its commander-in-chief, General Oleksandr Sirski, has ordered an investigation into why one of his brigades has been suffering high levels of casualties. More details from Danny Eberhardt.