The Reserve Bank of India's (RBI's) interest rate decision, West Asia conflict and trading activity of foreign investors are the key factors that will dictate investors' sentiment in the market this week, analysts said.Moreover, quarterly earnings from IT bellwether TCS, domestic macroeconomic data and movement in global oil benchmark Brent crude would also guide trends in the market.Worsening tensions in the Middle East and foreign fund outflows were the major culprits behind the equity markets sharp fall last week.