In a statement in the German parliament Chancellor Angela Merkel said that what is happening in Syria, where thousands of civilians are persecuted, killed or forced to flee, is unacceptable.
President Muhammadu Buhari on Tuesday extended his "sincere congratulations" to President Vladimir Putin of Russian Federation on his victory in the country's recent presidential election.
President Muhammadu Buhari has also congratulated German Chancellor, Angela Merkel on her reelection for another term.
The president said Putin's "success for the fourth time in the election is a clear testimony of the confidence" Russians have in his leadership, urging him to "see this victory as a base to continue to promote global peace and stability".
Merkel, meanwhile, spoke of the importance of cultivating "good neighbourly relations" and underlined the significance of bilateral business ties, citing vibrant trade between Poland and Germany, which hit a record Euro 100 billion a year ago. She sent him "warm" congratulations this week after the Russian leader was elected to a new six-year term as president. "Ireland can rely on us", Merkel said. All Germans need to benefit from the longest economic boom since 1990, she said.
Merkel, 63, outlined her new government's agenda and highlighted a polarized country facing a range of threats from trade to a stable currency.
Merkel was officially re-elected the German Chancellor with the majority of lawmakers in the lower parliament backing her candidacy in a vote last week.
Supporting eastern European leaders who have refused to take in migrants, he said that "there is no obligation to diversity ... there is also no obligation to share my state with outsiders".