US equity investors will mainly focus on the US- and Israel-led war on Iran and its impact across asset classes and sectors, as well as nonfarm payrolls this week.

* Kuwait's Ministry of Defense said "several" US military aircraft crashed Monday and that "all crews survived," CNN reported. President Donald Trump reportedly said the conflict could last for four weeks.

* West Texas Intermediate crude oil futures jumped 7.7% to $72.11 a barrel early Monday.

* "Crude oil futures gapped massively higher to reflect the concerns about shipping through the Strait of Hormuz in the wake of the US-Israeli attacks on Iran," Saxo Bank analysts noted.

* Shares of defense companies such as Lockheed Martin (LMT), Northrop Grumman (NOC), and General Dynamics (GD) were up in premarket activity as the conflict in the Middle East expanded with Iran and Iran-backed militias attacking Israel and other countries, according to multiple news outlets.

* Shares of airlines and cruise companies were down in recent premarket activity, including Delta Air Lines (DAL), United Airlines (UAL), American Airlines (AAL), as well as Carnival (CCL, CUK), Royal Caribbean Cruises (RCL), and Norwegian Cruise Line (NCLH).

* The ICE US Dollar Index, which measures the strength of the greenback against a basket of the world's major currencies, jumped 0.6% to 98.16 early Monday.

* Apart from nonfarm payrolls and jobless claims, the other macroeconomic data due this week includes the ISM manufacturing and services indexes and retail sales.

* Nonfarm payrolls could inform pricing and timing of the Federal Reserve's next move, according to a note from Scotiabank on Friday. "The effects could ripple through the rates and currencies complexes and risk assets."