answer:If you are going to write to him, use real, old-fashioned pen and paper and send the letters as registered mail. That way, you have old-fashioned records. Keep your language moderate. Remind him of his having told you that there will be something for you when it’s available. Use his behavior towards your older brother as a gentle reminder. Keep your statement factual and short. Without a will, you really are at his mercy. Save your old testament wrath for afterwards. It’s not defamation if you say nothing defamatory. For now, no vitriol or personal attacks, no matter how justified. What’s your older brother’s opinion? Good luck.