Oil prices climbed this week as unrest in the Middle East escalated. Iran launched missiles at Israel and the Israelis threatened retaliation, raising the possibility of a disruption on the flow of oil from the region.

Oil prices rose further on Friday and were on track for strong weekly gains as investors weighed the prospect of a wider Middle East conflict disrupting crude flows against a well-supplied global market.

Wall Street has taken notice — share prices for companies in oil, gas, and drilling have moved higher with crude prices. The S&P 500 has dropped nearly one percent in that stretch. The energy sector within that index has rallied nearly 7 percent.