CNBC Daily Open: Will America open another front in the Middle East? Trump is considering

Saul Loeb | Afp | Getty ImagesHello, this is Justina Lee writing to you from Singapore. Welcome to another edition of CNBC's Daily Open.U.S. President Donald Trump is considering wading into another conflict, as Iran-backed Houthis target Saudi Arabia.Investors are looking ahead to the earnings season with U.S. big banks set to report results Tuesday, with focus also on the International Monetary Fund and World Bank's annual meetings, which could offer clues to the global financial outlook. What you need to know todayThe Middle East conflict continues to heat up after a deadly attack on Riyadh's main airport by Tehran-backed Houthis in Yemen. This development could also draw the U.S. deeper into the regional conflict. U.S. President Donald Trump said he was considering joining Saudi Arabia in its retaliation against the Houthis. The kingdom requested "urgent defense support" from the U.S. following the attacks, two Saudi Arabian government officials told MS NOW. "We may [back Saudi]. We're going to look at it," Trump told reporters.That could further complicate the possibility of a lasting resolution to the end of the Mideast war. On Saturday, Russian state media reported that Pres...