Conversation so far:
What was the political views of Sven Hedin?
Sven Hedin was a monarchist.
Which Monarchs or politicians did Sven Hedin support ?
Sven Hedin wrote the Courtyard Speech, in which King Gustaf V promised to strengthen the country's defenses.

Question: King Gustaf V was the king of which country ?
Self-contained rewrite: King Gustaf V was the king of which country ?