Simplify the following text for a Grade 10 native English-speaking person.
Original: Since 2000 , the president of the ICRC has been Jakob Kellenberger , a reclusive man who rarely makes diplomatic appearances but who is skilled in personal negotiation and comfortable with the dynamics of the Assembly .
Simplified: Since 2000 , the president of the ICRC has been Jakob Kellenberger . Kellenberger does not make many public appearances or statements but is good at personal negotiation promoting the ICRC privately .