Radosław Sikorski is head of the Ministry of abroad Affairs, now he wants to become president. Who is he?

Radosław Sikorski is simply a abroad minister in Donald Tusk's government. He served in this function from 2007 to 2014. Now he would like to run for president of Poland. Whether to become a candidate for the civilian Coalition will be decided by the primaries in which he will face Rafał Trzaskowski. What is worth knowing about Radosław Sikorski?