Exactly as it should be. When any head of state goes into a war zone, it should never be announced in advance lest an attack is planned and launched based on that information.
It is reasonable and not unlike Blair's recent visit to Iraq. Same secrecy, same reason.
Reporters face arrest daily in this country when covering the courts under both contempt and identifying certain individuals rules set down by the courts.
I guess some have to search hard for a reason to wish for a majority.