As a scientist, I decided today to stop all collaborations with any scientist working for a Russian institute. Additionally, I decided to refuse to write any referee report on any scientific manuscript or project in which Russian institutes are involved

I salute your courage sir. If everyone of us who feel the pang of the Ukrainians, will do what we can at our level to bring an end to this assault, peace will return to the troubled country sooner than we think but if we fold our hands helplessly, I am afraid, things can only get worse. We cannot wish away trouble, we must do what we can to put it out.