"Former enemies Croatia and Serbia-Montenegro on Monday stressed their aspiration for a joint future in the European Union and their determination to speedily resolve all outstanding issues," British news agency Reuters said.
It underlined that the "landmark visit" yielded a joint declaration outlining a speedy solution of issues, such as refugee returns, as well as agreements on the protection of ethnic minorities and cooperation in science and technology.
Reuters said the visit sent "a strong signal" that the two countries "are ready to put the legacy of conflict behind them".
Sanader "was greeted with a military guard of honour in Belgrade by Svetozar Marovic, president of Serbia and Montenegro, the loose union which replaced rump Yugoslavia last year," said Reuters, quoting Marovic as saying that "Belgrade should look at how Croatia fulfilled its obligations to the United Nations war crimes court".
"Serbia and Montenegro must fulfil these painful things the same way Croatia has done," the agency quoted Marovic as saying.
Reuters also ran a chronology of events following Croatia's separation from the ex-Yugoslav federation.
French news agency AFP said Sanader's visit was the first official visit by a Croatian prime minister and that it represented an important step in the normalisation of relations between the two countries. It said the Sanader-Marovic talks confirmed common interests -- to improve bilateral relations, strengthen regional stability, and adopt European values.
According to Deutsche Presse Agentur, Zagreb-Belgrade relations have warmed up in recent years but some painful issues still need solving.
The German news agency quoted Sanader as saying that he would ask Belgrade first to shed light on the fate of 1,200 Croats gone missing during the war. The agency also highlighted Belgrade's proposal to provide with economic relations a framework for the settlement of many problems, such as the issue of tens of thousands of Serbs who left Croatia towards the end of the war.
DPA provided a background to the conflict which erupted after Croatia proclaimed independence, a "move which first started a brief conflict in Slovenia, then a bloody war in Croatia, where the Serb minority, with the support of Belgrade and the army, immediately proclaimed a breakaway state which covered one-third of Croatia".
The agency recalled that "Zagreb and Belgrade established diplomatic ties after the end of the war, but relations remained frozen until the fall of hardliner Slobodan Milosevic four years ago".
Austrian news agency APA said the fate of the missing Croats was one of the "difficult issues burdening relations between the two countries".
Like the other news agencies, Slovenia's STA cited the statements of Sanader, Marovic, Serbian PM Vojislav Kostunica, as well as the chief of Kostunica's office, who said one of the topics of the talks would be Serbia and Montenegro's candidacy for the 2010 basketball championships and an offer to Croatia, Slovenia, and Bosnia-Herzegovina to participate in their organisation.