berlin u.s. secretary defense jam mattis homeland security chief john kelly attend munich security conference february event organizers say wednesday expect senior u.s. officials attend also mattis kelly confirm post days ago follow president donald trump jan. 20 inauguration sign point particularly strong participation new administration well congress group say statement bavarian state premier horst seehofer invite trump visit munich possibly annual security conference shortly election november although u.s. presidents attend event past u.s. vice presidents contrast frequently attend annual event munich draw leaders diplomats europe middle east unite state u.s. vice president mike pence invite yet clear would attend spokesman say wolfgang ischinger former german envoy washington conference chairman say participants would address issue future transatlantic relations nato eu ukraine crisis tie russia war syria jan. 15 trump say nato obsolete defend terror attack military alliance still important hope mince word speak honestly disagreements well common interest value ischinger say statement confirm participants include u.n. secretary general antónio guterres european council president donald tusk eu high representative federica mogherini nato secretary general jens stoltenberg presidents poland ukraine afghanistan prime minister norway hungary iraq russian foreign minister sergei lavrov participate well sigmar gabriel take german foreign minister friday many business leaders defense foreign minister lawmakers representatives non-governmental organizations human right watch also take part trump 's top defense homeland officials attend munich security conference