Together with Izidor Cankar and Franc Snoj, he was an important exponent of the liberal conservative fraction of the Slovene People's Party.

In the 1920s and 1930s, he served in the diplomatic service of the Kingdom of Yugoslavia, whilst simultaneously working as the editor on foreign policy for the conservative newspaper Slovenec.

After the Axis invasion of Yugoslavia in April 1941, he emigrated to New York City and then to London, where he collaborated in the activities of the Yugoslav Government in exile.

Together with Miha Krek, Franc Snoj, and Izidor Cankar, he formed the core of the Slovene People's Party in exile.

Unlike his contemporaries Izidor Cankar and Franc Snoj, who returned to Slovenia at the end of World War II, Kuhar remained in exile, where he assumed a highly critical attitude towards the new communist regime.