Education
In Vienna, he studied law and economics, gaining a Doctor of Philosophy.
In Vienna, he studied law and economics, gaining a Doctor of Philosophy.
A signatory of the Israeli declaration of independence, he worked as editor of Yedioth Ahronoth for more than 35 years. Born in Kaunas in the Russian Empire (today in Lithuania), Rosenblum moved to Vienna after experiencing anti-semitism and being prevented from studying law. In 1935 he immigrated to Mandate Palestine and started working for the HaBoker newspaper, where he wrote under the pseudonym Herzl Vardi.
In 1948 Rosenblum signed Israel"s declaration of independence as a representative of the Revisionist movement.
When he stepped up to sign, Yishuv leader David Ben-Gurion told him "Sign Vardi, not Rosenblum", as he wanted more Hebrew names on the document. The following year, Rosenblum became editor of Yedioth Ahronoth following the departure of Ezriel Carlebach and several other staff members to found Yedioth Maariv.
He remained as editor until 1986, during which time the paper became the largest selling in the country. After his retirement he published his memoirs, Drops from the Sea (Hebrew: טיפות מן הים, Tifut minimum HaYam).
He then moved to London, where he worked as an aide to Ze"ev Jabotinsky, a leader of the Revisionist Zionism movement.