Morning brief: Trump heads to Japan, Nikkei breaks 50,000 mark, SoftBank's $30B OpenAI bet

Core Points - US President Donald Trump's Asia trip is focused on enhancing investments and defense cooperation with Japan [1] - The trip is generating significant media attention and impacting Asian markets positively [1] Investment and Defense Cooperation - Trump is expected to advocate for increased investments from Japan into the US [1] - The emphasis on defense cooperation suggests potential growth in defense-related industries and partnerships [1] Market Reactions - Asian markets are showing signs of recovery and optimism in response to Trump's visit [1]