STOCKHOLM( Reuters)-Swedish climate and environment activist Greta Thunberg said on Twitter she was taking part in a protest on Friday outside the Russian embassy in Stockholm against its invasion of Ukraine. Thunberg, 19, who was nominated for the Nobel Peace Prize last year, posted on Twitter a picture of her standing with other protesters holding a sign with" Stand With Ukraine" written on it, saying she was" outside the Russian embassy right now". Russia on Friday pressed on with the invasio