ROME, AUG. 4 -- The European Community imposed broad sanctions against Iraq today, including embargoes on oil and arms, and European officials expressed hope that the measures would "strike at the heart" of Iraqi operations.

"As long as there is one Iraqi soldier {in Kuwait}, as long as there is not a legitimate and sovereign government . . . we will not be satisfied," said Italian Foreign Ministry spokesman Giovanni Castellaneta, announcing the six-point package of sanctions in response to Iraq's invasion of Kuwait on Thursday.

Italy, under the rotation of leadership, currently heads the EC.

The measures were decided today during a 3 1/2-hour emergency meeting of senior Foreign Ministry officials from the 12 EC nations and were accompanied by a call for the "immediate and unconditional withdrawal of Iraqi forces" from Kuwait.

A communique describing the officials' actions said "they consider groundless and unacceptable the reasons provided by the Iraqi government to justify the military aggression against Kuwait, and they will refrain from any act which may be considered as implicit recognition of authorities imposed on Kuwait by the invaders."

Castellaneta said the EC would consider further action, including a total embargo on commerce with Iraq or possible military intervention, if Iraq refuses to withdraw its troops from Kuwait, but such additional sanctions would only be taken under the auspices of the United Nations.

The United States has been lobbying for the U.N. Security Council to outlaw virtually all trade with Iraq.

If Iraq presses its military aggression in the Persian Gulf region, Castellaneta warned, "all measures are possible."

In a news conference this afternoon at the Italian Foreign Ministry, Castellaneta outlined the measures adopted by the EC. They include: an embargo on oil imports from Iraq and Kuwait, "appropriate measures" aimed at freezing Iraqi assets in European member countries, an embargo on the sale of arms and other military equipment to Iraq, the suspension of all military cooperation with Iraq, the suspension of technical and scientific cooperation with Iraq, and the suspension of Iraq's preferred trade status with the EC.

On Friday, Italy and six other EC countries -- Britain, France, West Germany, Belgium, the Netherlands, Luxembourg -- froze all Kuwaiti assets to prevent their falling into the hands of the gulf state's new Iraqi-backed government. Norway also has frozen Kuwaiti assets.

Italy also renewed a unilateral ban on arms exports to Baghdad that was lifted last fall with the close of the Iran-Iraq war.

Today, French Foreign Minister Roland Dumas said that France, in addition to participating in the EC sanctions, would consider supporting a naval blockade of Iraq or disruption of its oil pipelines if diplomatic efforts and sanctions are ineffective.

The rapid and unanimous decision to impose sanctions against Iraq seemed to reflect a new-found self-confidence among West European countries and a greater willingness on their part to assume a leadership role in international policy-making in the post-Cold War era.

It was also a notable departure from the EC's reluctance in the past to join the United States on delicate political decisions regarding the Middle East.

Italian Foreign Ministry officials said today's meeting went smoothly, with virtually no dissension among the European partners.

"In terms of unity, this meeting was exceptional for the European Community," said Ferdinando Nelli, the Foreign Ministry's counselor for European political affairs, noting that the measures would entail considerable economic sacrifice from some European countries.

In 1989, oil from both Iraq and Kuwait accounted for around 11 percent of the EC's total imports. Within the EC, Denmark is the most dependent on the two countries, importing 54 percent of its oil from them.

"We all saw the need for a strong, clear and united response," Nelli said.

He described the measures as "the strongest ever taken {by the EC} in terms of economic impact" against another country. In political terms, he compared the package to EC sanctions taken against South Africa in 1985.

The EC measures fit into an increasingly vocal chorus of international condemnation of Iraq, including a resolution drafted today by the 45-nation Organization of the Islamic Conference, deploring the Iraqi invasion and calling for immediate withdrawal of Iraqi troops from Kuwait.

In Tokyo today, Prime Minister Toshiki Kaifu said Japan would impose sanctions against Iraq if the United Nations voted to do so, the Associated Press reported.

In Beijing, Foreign Minister Qian Qichen indicated that China would not join the United States and other countries in imposing sanctions.

The official New China News Agency said Quian had said that the issue should be solved within the scope of inter-Arab relations.